EMISSION LINEWIDTH MEASUREMENTS OF 2-DIMENSIONAL ARRAY JOSEPHSON OSCILLATORS

Authors
BOOI PAA BENZ SP
Citation
Paa. Booi et Sp. Benz, EMISSION LINEWIDTH MEASUREMENTS OF 2-DIMENSIONAL ARRAY JOSEPHSON OSCILLATORS, Applied physics letters, 64(16), 1994, pp. 2163-2165
Citations number
15
Categorie Soggetti
Physics, Applied
Journal title
Applied physics letters → ACNP
ISSN journal
00036951
Volume
64
Issue
16
Year of publication
1994
Pages
2163 - 2165
Database
ISI
SICI code
0003-6951(1994)64:16<2163:ELMO2A>2.0.ZU;2-N
Abstract
We have coupled emission from 10 X 10 arrays of Josephson junctions at 4 K to a room-temperature mixer through a fin-line antenna and a WR-1 2 waveguide. A single voltage-tunable peak was detected in the frequen cy range from 53 to 230 GHz. A stripline resonance in the antenna redu ced the array's dynamic resistance and thereby the emission linewidth to as low as 10 kHz. We extract an effective noise temperature of 14 K from the linewidth data.